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Shock Absorber for Plastic Injection Molds Disclosure Number: IPCOM000062688D
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09

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Schaefer, WH [+details]


In molding operations where floating plates are required, shock absorber assemblies are utilized to reduce the noise and possible plate damage when the plates are clamped in the press operation. A number of plate configurations are possible. To illustrate the shock absorber principle, a single possible configuration is shown in Fig. 1 where only the cavity portion of the entire mold is shown. Cavity mold 10 (Fig. 1) consists of a back-up (clamp) plate 11 containing a sprue 12 and leader pins 13 on which a cavity plate 14 is free to float. Cavity plate 14 contains part cavity 15 and runner 16 with one or more gate drops. For simplicity, other necessary plate components, such as stripper pins and stop pins, are not illustrated.